High School Prodigies Have It Easy Even in Another World!, Vol. 8 (light novel) — Riku Misora

THE ORIGIN OF THE SEVEN LUMINARIESNow that Yamato is free, the Prodigies head for anancient elf village to learn why they were summoned to this world. The surprising truth they uncover confirms what Tsukasa has suspected all along: Time is running out. The evil dragon's forces are working to revive their master, and stopping them is the only way the high schoolers can return home. However, one in their group is missing. Can Masato be persuaded to rejoin the others before it's too late?